Double Jaw Surgery Method: SSRO vs IVRO

 Oral & Maxillofacial Experts


Double Jaw Surgery at an Oral 
& Maxillofacial Clinic?

Double Jaw surgery is not just a cosmetic surgery. It is a sophisticated and difficult surgery that must treat functional issues caused by skeletal malocclusion. While so, there are many people who believe the surgery is done only for cosmetic purposes considering its effect on enhancing one’s beauty. A surgery that does not consider the functions of the chin and jaw joints, along with the teeth that can chew and speak after the surgery, can be devastating. Accordingly, specialized knowledge on facial bone, teeth, and jaw joints must be the fundamental basis for healthy surgical results. Competency in this field cannot be acquired unless it is an oral and maxillofacial surgery hospital with dental school background.



SSRO Method (Saggital Split Ramus Osteotomy)

This is the most widely used method around the world. This method tends to result in outstanding initial immovability and is effective at expanding the length. However, if the patients were naturally born with thin bones or have thin bones as a result of receiving double jaw surgery to treat structural issues such as a square jaw, applying the SSRO method may be difficult due to the possibility of exposing the nerves.


IVRO Method (Intraoral Vertical Ramus Osteotomy)

By inducing a physiological equilibrium on the relation between the temporomandibular joint ( or jaw joints) and the occlusion, there is the effect of enhancing the functions of the jaw joints. Cortical osteotomy techniques can concurrently be used, and therefore, there is an advantage of achieving a potentially significant enhancement in the case of facial asymmetry or wide jawline. However, as the positions of the bones are not fixed after fracturing, intermaxillary fixation for 2 weeks after the surgery is needed. As in the case of a short chin, this method is difficult to use in case the lower jaw needs to be pulled forward.



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